code: def __init__(self):
      super().__init__(parallel=True)
      self.df = None
      self.selected_year = None
  
file_path: pytorch-lightning/docs/source-app/workflows/add_web_ui/dash/intermediate_plot.py
imports: from typing import Optional
  import pandas
  import plotly.express
  from dash import Dash, dcc, html, Input, Output
  from lightning.app import LightningWork, LightningFlow, LightningApp
  from lightning.app.storage import Payload
label_desc: Use image node_id 1 to create a new LitDash object from inherited base classes: LightningWork with example: obj = LitDash()